Microppose filter patches come in half (16) and full sheets (32). These adherable filter patches are able to withstand multiple PC cycles and washings.
Advantages of using these manufactured filter patches over home remedies such as "polyfill" stuffing include consistency and efficiency. No more struggling to twist pillow stuffing precariously into sharp holes using chopsticks. Just make a 1/4-3/8 hole and firmly adhere the filter patch, allowing for gas exchange to occur and happy mycelium to thrive.
These filter patches have a formidable 0.22 micron filtration efficiency rating, ensuring safety for any variety of grain spawn or liquid culture inoculum.